JP4586601B2 - Wireless intercom system - Google Patents

Description

  The present invention relates to a wireless compatible intercom system configured by connecting a door phone slave unit and an interphone master unit with a signal line, further connecting a wireless adapter to the interphone master unit, and adding a wireless extension master unit. Regarding improvements.

  This type of wireless compatible intercom system is used in detached houses.

  Patent Document 1 below discloses this type of wireless-compatible intercom system, which is connected to a TV interphone master unit in which a camera-equipped doorphone slave unit is connected by a two-wire signal line, and to this TV interphone master unit. It is composed of a wireless adapter and a television intercom wireless extension base unit that transmits and receives signals to and from the television intercom base unit by transmitting and receiving wireless signals to and from the wireless adapter.

  In this type of system, when the TV interphone main unit receives a call from the door phone with camera, it sends a call signal to the wireless adapter, and the wireless adapter that receives the call sends the call signal to the TV as a radio signal. By transmitting to the intercom wireless extension base unit, if a person near the wireless extension base unit inputs an operation to answer the call, the wireless extension base unit can also output a ringing tone and display a visitor video.

  By the way, in such a system, the TV intercom wireless extension master unit performs wireless communication with the wireless adapter even during call waiting.

  That is, when waiting for a call, a confirmation request signal is intermittently sent from the wireless adapter, and if a reply signal is received from the TV intercom wireless extension base unit, the wireless adapter is connected to the TV intercom wireless extension base unit. Necessary signals are transmitted and received to establish communication conditions, so that when the wireless adapter receives a call signal from the TV interphone master unit, it can immediately send the call signal to the TV intercom radio extension master unit.

  However, since such intermittent wireless communication is performed, power is consumed even when waiting for a call, so that there is a problem that a wireless extension base unit driven by a dry battery cannot obtain a sufficient call waiting time. .

On the other hand, Patent Document 2 discloses a printing apparatus that saves power consumption by detecting the brightness of the surroundings with an optical sensor and changing the brightness of the operation panel according to the brightness. .
JP 2000-224316 A Japanese Patent Laid-Open No. 7-25111

  The present invention controls the driving and stopping of the device according to the illuminance detected by the illuminance sensor, thereby suppressing the power consumption of the wireless extension base unit, thereby obtaining a sufficient call waiting time. The object is to provide a wireless intercom system.

  As described above, in the wireless intercom system, intermittent communication is performed between the wireless adapter and the wireless extension base unit even when waiting for a call. The possibility of answering a call at the extension base unit is low, and therefore there is little need for intermittent communication during call waiting.

  The present invention is intended to determine the presence or absence of a person around such a wireless extension base unit based on a measurement result of an illuminance sensor, that is, ambient brightness.

  A second object is to perform intermittent communication with lower power in the wireless extension base unit by using the illuminance sensor to suppress the power consumption of the wireless extension base unit.

  In order to achieve the first and second objects, the first and second aspects of the present invention connect a door phone slave unit and an interphone master unit with a signal line, and further include a wireless communication unit in the interphone master unit. A wireless compatible intercom system configured by connecting a wireless adapter and adding a wireless extension base unit has the following characteristics.

That is, in the wireless compatible intercom system according to claim 1 according to the first aspect of the present invention, the wireless adapter is not directly connected to the door phone slave unit but is wired to the interphone master unit, and the wireless extension master unit is , An illuminance sensor, a wireless communication unit, and a wireless communication control means. The wireless communication control means determines the illuminance detection signal of the illuminance sensor, and when the illuminance is less than a predetermined threshold, Stops intermittent communication for establishing wireless communication conditions with the wireless adapter without driving the wireless communication unit, and starts driving the wireless communication unit of the wireless extension base unit when the illuminance is above a predetermined threshold Intermittent communication with the wireless adapter, and after receiving a call calling signal based on the calling signal from the intercom master unit from the wireless adapter in that state, there is no communication with the wireless adapter. Extension master station is configured to perform a communication process that enables calls to and from the doorphone entrance unit, or intercom master unit through intercom master unit, the wireless adapter, confirmation from the wireless extension master stations in the intermittent communication When the reply signal is monitored and a call signal is received from the intercom master unit during that time, the presence / absence of the person around the wireless extension master unit is determined based on the presence / absence of the confirmation reply signal, and communication processing is performed when there is. While the control is performed, the intercom base unit is notified to that effect when it is absent.

According to claim 2, which is the second aspect of the present invention, the wireless adapter is not connected to the door phone slave unit but wired to the master unit, and the wireless adapter includes a wireless communication unit, wireless adapter communication control means, The wireless extension base unit includes a first wireless communication unit, a second wireless communication unit for intermittent communication with less power consumption, an illuminance sensor, and a wireless extension base unit communication control means. It has. Further, the wireless extension base station communication control means determines the illuminance detection signal of the illuminance sensor, and when the illuminance is less than a predetermined threshold, the first and second wireless communication units are not driven and wirelessly communicated with the wireless adapter. When intermittent communication for establishing communication conditions is stopped and the illuminance is equal to or higher than a predetermined threshold, only the second wireless communication unit starts to be driven, and then the call signal from the interphone master unit from the wireless adapter During the period until receiving the call call signal based on the above, only the second wireless communication unit is driven to perform intermittent communication with the wireless adapter, and further, the call call signal is received from the wireless adapter in that state. After that, the driving of the second wireless communication unit is stopped, the driving of the first wireless communication unit is started, and the wireless extension base unit is connected to the wireless adapter through the base unit with the door phone sub unit or the interphone base unit. Between the machine Is configured to perform a communication process that enables the call, the wireless adapter monitors a confirmation reply signal from the wireless extension master stations in the intermittent communication, when receiving a call signal from the intercom master unit during a confirmation Based on the presence / absence of a reply signal, the presence / absence of a person around the wireless extension master unit is determined, and control is performed to determine communication processing when the user is present, while notifying the interphone master unit of the presence when the user is absent. It is configured.

  According to the first and second aspects of the present invention, the illuminance sensor is provided in the wireless extension base unit, and the wireless communication unit provided in the wireless extension unit is driven and stopped according to the illuminance level detected by the illuminance sensor. Therefore, when the illuminance is sufficiently low, it is determined that there is a low possibility that a person will respond, and at that time, the wireless communication unit is stopped so that intermittent communication or wireless communication by calling is not performed. As a result, power consumption can be suppressed, and a sufficient call waiting time can be secured for the wireless extension base unit driven by the battery.

  In the second aspect of the present invention, both the wireless adapter and the wireless extension base unit are the first wireless communication unit, and the second wireless communication unit for intermittent communication that consumes less power than the first wireless communication unit. Therefore, when intermittent communication is performed, communication is performed by the second wireless communication unit, so that power consumption can be suppressed and an energy saving effect can be improved.

  Embodiments of the present invention will be described below. In this embodiment, an example applied to a wireless compatible TV intercom system is shown.

  FIG. 1 is a diagram schematically showing an example of the basic configuration of the first inventive system.

  The system of the first aspect of the present invention includes a TV interphone master unit 2, a camera-equipped doorphone slave unit 1 wired to the TV interphone master unit 2, a wireless adapter 3, and a TV interphone wireless extension base unit 4. .

  Here, the wireless adapter 3 is not directly connected to the camera-equipped doorphone slave unit 1, but is connected to the two-wire signal line L derived from the TV interphone master unit 2.

  The two-wire signal line L is composed of a two-wire balanced cable or the like, and a system control signal including a voice signal, a video signal, and a paging signal is superimposed on the signal line L by a frequency multiplexing method. Is transmitted.

  In the first aspect of the present invention, each of the wireless adapter 3 and the television interphone wireless extension base unit 4 performs wireless communication of control signals, audio signals, and video signals with the communication control means 30A and 40A for performing wireless communication control. Wireless communication units 31 and 41 are provided.

The television interphone wireless extension master station 4 is provided with an illuminance sensor 4A which measures the ambient brightness, as will be described later, is switched drive the drive stop of the wireless communication unit 41 by the illuminance measured. That is, when the surroundings are dark, it is assumed that there is no person, and in that case, it is determined that the possibility of using the TV intercom wireless extension base unit 4 is low, and wireless communication is disabled.

  Next, the calling operation from the camera-equipped doorphone slave unit 1 will be described.

  If there is a call at the camera-equipped doorphone slave unit 1, the voltage value of the signal line L changes, so that the TV interphone base unit 2 detects this change and recognizes that the call has been received. Then, the television intercom base unit 2 performs a call operation such as a ringing tone output and sends a call signal to the wireless adapter 3. When the wireless adapter 3 receives the calling signal, the wireless adapter 3 sends the calling signal in the form of a wireless signal to the TV intercom wireless extension base unit 4. In the present specification, the calling signal from the wireless adapter 3 in the wireless signal format is called a call calling signal, and is distinguished from the calling signal issued by the television interphone master unit 2.

  If there is a response at the TV interphone master unit 2 that is performing a calling operation, a communication path is formed with the camera-equipped doorphone slave unit 1 and communication becomes possible.

  On the other hand, the TV intercom wireless extension base unit 4 that has received the call calling signal also performs a call operation to call a resident, and if there is a response, the TV intercom wireless extension base unit 4 and the door phone slave unit 1 with a camera have a communication path. It is formed and can talk.

  When a call operation is performed on the TV interphone base unit 2 and the TV interphone wireless extension base unit 4, a communication path is formed between the first answering unit and the camera-equipped doorphone sub unit 1. .

  In addition, when the camera-equipped doorphone slave unit 1 is on standby for calling, wireless signals are intermittently transmitted and received between the wireless adapter 3 and the television intercom wireless extension base unit 4 so that the wireless adapter 3 and the TV intercom wireless extension base unit 4 are transmitted. And established wireless communication conditions.

  The wireless adapter 3 and the TV interphone wireless extension base unit 4 have both the wireless communication units 31 and 41 described above, so that both wireless communication by calling and intermittent communication during call waiting are executed.

  FIG. 2 is a block diagram showing an example of the basic configuration of the first inventive system.

  The intercom 1 with camera includes a signal processing unit 10, a speaker amplifier A1 that amplifies the level of the audio signal output to the speaker SP, a microphone amplifier A2 that amplifies the level of the audio signal input from the microphone MIC, the camera 11, A call button 12 is provided.

  The television interphone master unit 2 includes a signal processing unit 20, a speaker amplifier A1 that amplifies the level of the audio signal output to the speaker SP, a microphone amplifier A2 that amplifies the level of the audio signal input through the microphone MIC, a monitor 21, and an operation A button 22 is provided.

  The wireless adapter 3 includes a signal processing unit 30 having a wireless adapter communication control unit 30A and a wireless communication unit 31 having an antenna ANT1.

  The wireless communication unit 31 transmits and receives audio signals and video signals to and from the TV intercom wireless extension base unit 4 to enable a call between the TV intercom wireless extension base unit 4 and the camera-equipped doorphone slave unit 1. At the same time, when waiting for reception of the call signal from the TV interphone main unit 1, a confirmation request signal is intermittently sent to the TV intercom wireless extension base unit 4 and a confirmation reply signal is received. To do.

  When waiting for a call, the wireless adapter communication control means 30A intermittently sends a confirmation request signal from the wireless communication unit 31 to the television intercom wireless extension base unit 4 and receives a confirmation reply signal. 4 is determined to be in a standby state, and when a call signal is received from the TV interphone master unit 2 in that state, a call call signal is transmitted from the radio communication unit 31, and at least a signal necessary for a call is transmitted and received. Start.

  The TV intercom radio extension base unit 4 amplifies the level of the audio signal output to the signal processing unit 40 having the radio extension base unit communication control means 40A, the radio communication unit 41 having the antenna ANT1, the illuminance sensor 4A, and the speaker SP. A speaker amplifier A1, a microphone amplifier A2 that amplifies the level of an audio signal input from the microphone MIC, a monitor 43, and operation buttons 44 are provided.

The wireless communication unit 41 transmits and receives audio signals and audio signals to and from the wireless adapter 3 to enable a telephone conversation between the TV intercom wireless extension base unit 4 and the camera-equipped doorphone slave unit 1, and the wireless adapter 3 receives a confirmation request signal intermittently sent from the television intercom radio extension base unit 4 and waits for reception of a paging signal from the television interphone base unit 1 from the television intercom base unit 1, and receives a confirmation reply signal in response thereto. Is sent out.

  The wireless extension base station communication control means 40A sends a confirmation reply signal each time it receives a confirmation request signal intermittently sent from the wireless adapter 3 during call waiting. Then, upon receiving a call calling signal from the wireless adapter 3, the wireless extension master communication control means 40A starts at least sending and receiving a signal necessary for the call.

  In the first aspect of the present invention, when the ambient brightness is determined by the illuminance sensor 4A provided in the TV intercom wireless extension base unit 4 and the ambient brightness is determined to be dark, the driving of the wireless communication unit 41 is stopped and wireless communication is disabled. Like to maintain.

  That is, in such a state, not only wireless communication by calling in the TV intercom wireless expansion base unit 4 is disabled, but also intermittent communication during call waiting is not performed, so the periphery of the TV intercom wireless expansion base unit 4 is dark. Useless intermittent communication in the case where it is predicted that a person is absent is stopped, and power consumption can be suppressed.

  Next, basic operations of the wireless adapter 3 and the TV intercom wireless extension base unit 4 in the first inventive system will be described.

  3 and 4 are flowcharts showing the basic operations of the wireless adapter 3 and the television intercom wireless extension base unit 4, respectively.

  As shown in FIG. 3, when the power is turned on, the wireless adapter 3 drives the wireless communication unit 32 and enters a call waiting state (100, 101).

  While the call signal is not received from the TV interphone master unit 2, intermittent communication is performed with the TV interphone radio extension master unit 4 to establish the radio communication conditions, and a confirmation reply signal is received from the TV interphone radio extension master unit 4. The reply flag is set, and the flag is reset while the confirmation reply signal is not received (102 to 104).

  Then, when a call signal is received from the TV intercom master unit 2 in the call waiting state, the TV interphone master is referred to unless the reply flag is set with reference to the reply flag, that is, if the wireless communication condition is not established. A message indicating that the TV intercom wireless extension base unit 4 is absent is returned to the unit 2 (102, 105, 106).

On the other hand, if the reply flag is set when the call signal is received from the TV interphone master unit 2, the data is transmitted from the TV interphone master unit 2 for a certain period of time after the call call signal is transmitted. Wait for a while, and confirm that the wireless extension base unit 4 is ready to receive audio and video, and if a video signal or audio signal is received from the TV intercom base unit 2 within a certain time, It performs mutual communication of signals via the wireless communication unit 31 in the machine 4, the television interphone wireless extension master station 4 and calls the camera-equipped intercom slave unit 1 is started, if the call is finished, call waiting in step 101 Return to state (102, 105, 107-110).

If no video signal or audio signal is received within a certain time, the process returns to the call waiting state at step 101 (108, 111).

  On the other hand, as shown in FIG. 4, when the power is turned on, the TV intercom wireless extension base unit 4 activates the illuminance sensor 4A to determine whether the data detected by the illuminance sensor 4A is less than the threshold value. If there is, the driving of the wireless communication unit 41 is stopped (200 to 203). Thereafter, the illuminance data check by the illuminance sensor 4A is repeated.

  When it is determined that the detection data of the illuminance sensor 4A is equal to or greater than the threshold value, the wireless communication unit 41 is driven, and when a confirmation request signal is transmitted from the wireless adapter 3, a confirmation reply signal is transmitted and a call calling signal is transmitted. This intermittent communication is repeated until it comes (202, 204 to 207).

  Even when the intermittent communication is repeated, if the detection data of the illuminance sensor 4A becomes less than the threshold value, the driving of the wireless communication unit 41 is stopped (202, 203), and the TV intercom wireless extension base unit 4 enters a sleep state. .

  When the wireless communication unit 41 is in operation, when a call calling signal is received from the wireless adapter 3, a ringing tone is output, and a response to the operation is waited for a predetermined time. Then, signals are communicated with each other via the wireless communication unit 41, and the telephone intercom wireless extension base unit 4 and the camera-equipped doorphone slave unit 1 are started to communicate. Return (207 to 211).

  If no video signal or audio signal is received within a predetermined time, the process returns to the call waiting state at step 202 (209, 212).

  As described above, the illuminance sensor 4A is provided in the TV intercom wireless extension base unit 4, the ambient brightness is determined by the threshold value check of the illuminance detection data of the sensor 4A, and the wireless communication is performed when the predetermined darkness is determined. Since the TV intercom wireless extension base unit 4 is in a sleep state by stopping the driving of the unit 41, the intermittent communication during the call waiting can be stopped during that period, and as a result, power consumption can be suppressed. It is possible to secure a sufficient call waiting time for the wireless extension base unit driven by a dry battery or the like.

  FIG. 5 is a diagram schematically showing an example of the basic configuration of the second present invention system.

  The second system of the present invention includes a TV interphone master unit 2, a camera-equipped doorphone slave unit 1 wired to the TV interphone master unit 2, a wireless adapter 3, and a TV interphone wireless extension base unit 4. .

  Here, the wireless adapter 3 is not directly connected to the camera-equipped doorphone slave unit 1, but is connected to the two-wire signal line L derived from the TV interphone master unit 2.

  The two-wire signal line L is composed of a two-wire balanced cable and the like. The signal line L is based on the system power supply, and includes a system control signal including an audio signal, a video signal, and a paging signal. The data superimposed by the frequency multiplexing method is transmitted. Note that a coaxial cable that transmits a video signal, a control signal, an audio signal, a signal line that transmits power, and a power line connected to each other may be used.

  In the second aspect of the present invention, each of the wireless adapter 3 and the TV intercom wireless extension base unit 4 performs wireless communication of control signals, audio signals, and video signals by calling with the communication control means 30A and 40A for performing wireless communication control. First wireless communication units 31 and 41 for communication and second wireless communication units 32 and 42 for performing intermittent communication during call waiting.

  Further, the TV intercom wireless extension base unit 4 is provided with an illuminance sensor 4A for measuring ambient brightness, and as described later, the first and second wireless communication units 41 and 42 are driven and stopped by the measured illuminance. Is switched. That is, when the surroundings are dark, it is assumed that there is no person, and in that case, it is determined that the possibility of using the TV intercom wireless extension base unit 4 is low, and wireless communication is disabled.

  Next, the calling operation from the camera-equipped doorphone slave unit 1 will be described.

  If there is a call at the camera-equipped doorphone slave unit 1, the voltage value of the signal line L changes, so that the TV interphone base unit 2 detects this change and recognizes that the call has been received. Then, the television intercom base unit 2 performs a call operation such as a ringing tone output and sends a call signal to the wireless adapter 3. When the wireless adapter 3 receives the calling signal, the first wireless communication unit 31 sends the calling signal in the form of a wireless signal to the TV intercom wireless extension base unit 4. The call signal in the radio signal format is called a call call signal.

  If there is a response at the TV interphone master unit 2 that is performing a calling operation, a communication path is formed with the camera-equipped doorphone slave unit 1 and communication becomes possible.

  On the other hand, the TV intercom wireless extension base unit 4 receives a call calling signal in the first wireless communication unit 41, performs a call operation to call a resident, and if there is a response, the TV intercom wireless extension base unit 4 and the camera door phone A communication path is formed with the sub unit 1 so that a call can be made.

  When a call operation is performed on the TV interphone base unit 2 and the TV interphone wireless extension base unit 4, a communication path is formed between the first answering unit and the camera-equipped doorphone sub unit 1. .

  In addition, when the camera-equipped doorphone slave unit 1 is on standby for calling, wireless signals are intermittently transmitted and received between the wireless adapter 3 and the television intercom wireless extension base unit 4 so that the wireless adapter 3 and the TV intercom wireless extension base unit 4 are transmitted. And established wireless communication conditions. As described above, the intermittent communication is performed by the second wireless communication units 32 and 42.

  Note that the internal configuration of each device constituting the second aspect of the present invention is the same except for the second wireless communication units 32 and 42 described above, and therefore the block diagram and description thereof are omitted.

  Next, basic operations of the wireless adapter 3 and the TV intercom wireless extension base unit 4 in the second system of the present invention will be described.

  FIGS. 6 and 7 are flowcharts showing the basic operations of the wireless adapter 3 and the TV intercom wireless extension base unit 4, respectively.

  As shown in FIG. 6, when the power is turned on, the wireless adapter 3 stops driving the first wireless communication unit 31, drives only the second wireless communication unit 32, and enters a call waiting state ( 300-302).

  While the calling signal is not received from the TV interphone master unit 2, intermittent communication for establishing radio communication by the TV intercom radio extension master unit 4 and the second radio communication unit 32 is performed, and the TV interphone radio extension master unit 4 is established. When a confirmation reply signal is received from, a reply flag is set, and is reset before the confirmation reply signal is received (303 to 305).

  When a call signal is received from the TV intercom base unit 2 in the call waiting state, the TV interphone base unit is referred to if the reply flag is not set with reference to the reply flag, that is, if wireless communication is not established. 2 replies that the TV intercom wireless extension base unit 4 is absent (303, 306, 307).

On the other hand, if the reply flag is set when the call signal is received from the TV intercom base unit 2, the call call signal is transmitted, and then the first wireless communication unit 31 is driven to perform the second wireless communication. When the driving of the unit 32 is stopped, data is transmitted from the TV interphone main unit 2 for a predetermined time, and when a video signal or an audio signal is received from the TV interphone main unit 2 within the predetermined time, If the unit 4 performs mutual communication of signals via the first wireless communication unit 31 and the telephone interphone wireless extension base unit 4 and the camera-equipped doorphone slave unit 1 start and the telephone conversation ends, step 301 is performed. Return to the call waiting state (303, 306 to 313).

  If no video signal or audio signal is received within a predetermined time, the process returns to the call waiting state at step 301 (311 and 314).

  On the other hand, as shown in FIG. 7, when the TV intercom wireless extension base unit 4 is turned on, the illuminance sensor 4A is activated to determine whether the data detected by the illuminance sensor 4A is less than the threshold value. If there is, the driving of the first and second wireless communication units 41 and 42 is stopped (400 to 204). Thereafter, the illuminance data check by the illuminance sensor 4A is repeated.

When it is determined that the detection data of the illuminance sensor 4A is equal to or greater than the threshold value, driving of the first wireless communication unit 41 is stopped, only the second wireless communication unit 41 is driven, and then a confirmation request signal is transmitted from the wireless adapter 3 Then, a confirmation reply signal is transmitted, and this intermittent communication is repeated until a call calling signal is transmitted (402, 405 to 409).

  Even if the intermittent communication is repeated, if the detection data of the illuminance sensor 4A becomes less than the threshold value, the driving of the first and second wireless communication units 41 and 42 is stopped (402 to 404), and the TV intercom wireless extension is performed. Base unit 4 enters a sleep state.

  When the second wireless communication unit 42 is driven, if a call calling signal is received from the wireless adapter 3, the driving of the second wireless communication unit 42 is stopped and the first wireless communication unit 41 is driven. Outputs a ringing tone, waits for a response by an operation to it for a certain period of time, and if there is a response, performs mutual communication of signals with the wireless adapter 3 via the wireless communication unit 41, and the TV intercom wireless extension base unit 4 And the camera-equipped doorphone cordless handset 1 start the call, and when the call ends, the process returns to the call waiting state in Step 402 (409 to 415).

  If no video signal or audio signal is received within a predetermined time, the process returns to the call waiting state at step 402 (413, 416).

  As described above, also in the second aspect of the present invention, the illuminance sensor 4A is provided in the TV intercom wireless extension base unit 4, and the ambient brightness is determined by checking the threshold value of the illuminance detection data of the sensor 4A. When the darkness is determined, driving of the wireless communication unit 41 is stopped and the TV intercom wireless extension base unit 4 is in a sleep state, so that intermittent communication during call waiting can be stopped during that period. Consumption can be suppressed, and the call waiting time of the wireless extension base unit driven by a dry battery or the like can be sufficiently secured.

  Furthermore, in the second aspect of the present invention, both the wireless adapter 3 and the wireless extension base unit 4 are the first wireless communication units 31 and 41 and the second wireless communication unit 32 for intermittent communication with less power consumption. 42, the power consumption can be kept low when intermittent communication is performed, and the energy saving effect can be increased.

It is a figure showing typically an example of the basic composition of the 1st present invention system. It is a block diagram showing an example of the basic composition of the 1st present invention system. It is a flowchart which shows an example of the basic operation | movement of the wireless adapter in 1st this invention. It is a flowchart which shows an example of the basic operation | movement of the television intercom radio | wireless expansion main | base station in 1st this invention. It is a figure which shows typically an example of the basic composition of the 2nd invention system. It is a flowchart which shows an example of the basic operation | movement of the wireless adapter in 2nd this invention. It is a flowchart which shows an example of the basic operation | movement of the television intercom radio | wireless expansion main | base station in 2nd this invention.

DESCRIPTION OF SYMBOLS 1 Doorphone subunit | mobile_unit with a camera 2 Television intercom main | base station 3 Wireless adapter 30A Wireless adapter communication control means 31 (1st) Wireless communication part 32 2nd wireless communication part 4 Television intercom radio | wireless expansion main | base station 40A Communication control means 41 (1st 1) Wireless communication unit 42 Second wireless communication unit 4A Illuminance sensor L Signal line

Claims (2)

A wireless compatible intercom comprising a doorphone slave unit and an interphone master unit connected by a signal line, a wireless adapter having a wireless communication unit connected to the interphone master unit, and a wireless extension master unit added. A system,
The wireless adapter is not directly connected to the door phone slave unit, but is wired to the interphone master unit,
The wireless extension base unit includes an illuminance sensor, a wireless communication unit, and a wireless communication control means.
The wireless communication control means discriminates an illuminance detection signal of the illuminance sensor, and when the illuminance is less than a predetermined threshold, wireless communication is performed with the wireless adapter without driving the wireless communication unit of the wireless extension base unit. When the intermittent communication for establishing the condition is stopped, and the illuminance is equal to or higher than a predetermined threshold value, the intermittent communication with the wireless adapter is started by starting driving the wireless communication unit of the wireless extension master unit, Furthermore, after receiving a call calling signal based on a calling signal from the interphone master unit from the wireless adapter in that state, the wireless extension master unit communicates with the wireless adapter through the interphone master unit. Or a communication process that enables a call with the interphone master unit ,
The wireless adapter monitors the confirmation reply signal from the wireless extension base unit in the intermittent communication, and when the call signal is received from the intercom base unit during that period, the wireless extension is based on the presence or absence of the confirmation reply signal. A wireless-compatible intercom system configured to determine the presence / absence of a person around the base unit and to determine the communication processing when present, while notifying the interphone base unit of the presence when absent. . A wireless intercom system configured by connecting a door phone slave unit and an interphone master unit with a signal line, further connecting a wireless adapter to the interphone master unit, and adding a wireless extension master unit,
The wireless adapter is connected to the interphone master unit without being connected to the door phone slave unit, and the wireless adapter includes a wireless communication unit and a wireless adapter communication control unit, and the wireless extension The parent device includes a first wireless communication unit, a second wireless communication unit for intermittent communication with less power consumption, an illuminance sensor, and a wireless extension parent device communication control means,
The wireless extension master communication control means determines the illuminance detection signal of the illuminance sensor, and when the illuminance is less than a predetermined threshold, does not drive the first and second wireless communication units and communicates with the wireless adapter. Intermittent communication for establishing wireless communication conditions between them is stopped, and when the illuminance is equal to or higher than a predetermined threshold, driving of only the second wireless communication unit is started, and thereafter, the intercom parent from the wireless adapter is started. During the period until receiving the call call signal based on the call signal from the machine, only the second wireless communication unit is driven to perform the intermittent communication with the wireless adapter. After receiving the call calling signal from the wireless adapter, the driving of the second wireless communication unit is stopped, the driving of the first wireless communication unit is started, and the wireless communication with the wireless adapter is performed. Expansion base unit Is configured to perform a communication process that enables the call between the intercom slave unit, or the intercom master unit through the intercom master unit,
The wireless adapter monitors the confirmation reply signal from the wireless extension base unit in the intermittent communication, and when the call signal is received from the intercom base unit during that period, the wireless extension is based on the presence or absence of the confirmation reply signal. A wireless-compatible intercom system configured to determine the presence / absence of a person around the base unit and to determine the communication processing when present, while notifying the interphone base unit of the presence when absent. .

Images